Finding the Fourth Proportional to 1,271.27, 1,903.56 and 1,023.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,271.27 : 1,903.56 = 1,023.15 : x
2. Step 2: Convert to fraction form
   1,271.27/1,903.56 = 1,023.15/x
3. Step 3: Cross multiply
   1,271.27x = 1,903.56 × 1,023.15
4. Step 4: Simplify right side
   1,271.27x = 1,947,627.41
5. Step 5: Solve for x
   x = 1,947,627.41/1,271.27
6. Step 6: Final answer
   x = 1,532.03